Wrench



Feb. 27, 11923. I1;446,6319

c. R. EDWARDS WRENCH Filed May 21. 1920 TXCLZ ATTORNEY Patented a. 2?,

lVEENCH.

T 0 all whom it may concern Be it known that l, Gnnnnns R. lrlnwancs, citizen or the United Stat residing at Fouston, in the cour "v of .riai is and State oi" Texas have in lied certain new and useful lmprovemer ion, of which the followin is specification.

This invention relates to new improvements in wrench One object of the invention is to provide wrench of the character described which is specially adapted for use in screwing toher and unscrewing the meinl 01' a dol joint. drilling wells by the rotary process a drill stem is employed which is mace up of sections connected by what is commonly known as tool joints. T tool oints are specially constructeo may be readily screwed to screwed, in the process of breaking up a drill stein. well known to those *ir ilia drilling; e ual which the drill stem is subj ted in d, causes the members of the tool join s come very tigh ly screwed together so that it is often difiicult to unscrew them 1 chain tongs are commonly employed for this purpose but these often slip or break in op eration and the wrench herein l been speciall desi nod 15 r pl tool nt members Igormcl l or other many sided sections which vided tov receive the wrench.

Another object of the invention vide a wrench of the character case which is of simple construction and conse quently which may be cheapl and easily manufactured and hich is r ctive in operatioin and it is to be observed that. while the wrench been particu arl i designed for use in screwing toger l lllflSCl'eli i a b r i mg the mom ers 0.. sec.

and useful.

er and I it may be applied generally wherever deshe With the above and other cl j 'n view the invention has particular relation to (Ber-- tain novel features of construction. opera tion and arrangement of j ts, example 01? which is given in this specification and illustrated in the accompanying drawings wherein, Figure 1 is side view of the wrench as applied to the work,

Figure 2 is a sectional view taken on the line 9r2 of Figure 1, and

Figure 3 is a sectional view taken line 3-3 of Figure 1.

on the Referrin now more particularly to the drawings wherein like numerals of reference designate similar parts in each of the Figures the numeral 1 refers to the wrench. handle, one end of which is formed so as to be readily gripped by the operator and the other end of which is formed into an engaging aw 2. This aw has its operative face 3 formed of a contour to fit around one side of a polygonal section. As shown this jaw is formed for application to a hexagonal section. Adjacent the aw 2 the handle is provided with a recess a in which one end or the movable jaw 5 is fitted and a bearing pin 6 is fitted through aligned bearings in the handle and in said movable jaw. The opera tive face 7 of the movable jaw opposes the operative face 3 or the fixed jaw and is correspondingly notched so as to lit around the other side of the section to be turned. In application the wrench is engaged around the section to be turned and the handle 1 is taen moved in the direction indicated by the arrow in Figure 1. When said handle is so moved the wrench Saws 2 and 5 will grip the tool joint member to be turned and will enagainst the respective angles thereof. without the liability of slippage or disen gagement. The wrench may be readily disengaged from the work by reversing the movement of the handle and then pulling the pivoted jaw 5 backwardly, the socket 4% being somewhat elongated to permit the free movement of said jaw 5.

What I claim is:

A wrench including a handle, one end of which is formed into a fixed jaw, whose operative face is notched to conform to the contour ot and fit around one side of a poly onal section said handle having an elond recess adjacent said a movable aw one end of which works in said recess and is pivoted to said handle and whose operative iace opposes the operative face of the fixed jaw and is of a contour adapted to it around the other sideot said section, the bearing faces of the jaws bearing against all or the sides of said polygonal section to be turned.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES R. EDWARDS.

Witnesses:

19. V. HARDWAY, @LA M. SMITH, 

